Use C utility instead of awk for header generation in cmake builds

CMakeLists.txt

@@ -224,16 +224,21 @@ install(TARGETS ${OpenBLAS_LIBNAME}
 	LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} )
 
 # Install include files
+	add_executable(gen_config_h gen_config_h.c)
+	target_compile_definitions(gen_config_h PRIVATE VERSION=\"${OpenBLAS_VERSION}\")
 	message (STATUS "Generating openblas_config.h in ${CMAKE_BINARY_DIR}")
-	ADD_CUSTOM_TARGET(genconfig
-	COMMAND ${AWK} 'BEGIN{print \"\#ifndef OPENBLAS_CONFIG_H\" \; print \"\#define OPENBLAS_CONFIG_H\"}(ARGIND==1&&NF>0){print $$1,"OPENBLAS_"$$2, $$3 \; next} \; ARGIND==2{  print}END{print \"\#define OPENBLAS_VERSION \\"${OpenBLAS_VERSION}\\"\" \; print \"\#endif /* OPENBLAS_CONFIG_H */\"}' ${CMAKE_CURRENT_SOURCE_DIR}/config.h ${CMAKE_CURRENT_SOURCE_DIR}/openblas_config_template.h > "${CMAKE_BINARY_DIR}/openblas_config.h"
+	ADD_CUSTOM_COMMAND(
+	OUTPUT ${CMAKE_BINARY_DIR}/openblas_config.h
+	DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/config.h
+	COMMAND ${CMAKE_BINARY_DIR}/gen_config_h ${CMAKE_CURRENT_SOURCE_DIR}/config.h ${CMAKE_CURRENT_SOURCE_DIR}/openblas_config_template.h > ${CMAKE_BINARY_DIR}/openblas_config.h
 	)
-	add_dependencies( ${OpenBLAS_LIBNAME} genconfig genf77blas)
+	ADD_CUSTOM_TARGET(genconfig DEPENDS openblas_config.h)	
+	add_dependencies( ${OpenBLAS_LIBNAME}  genconfig genf77blas)
 	install (FILES ${CMAKE_BINARY_DIR}/openblas_config.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
 
 	message(STATUS "Generating f77blas.h in ${CMAKE_INSTALL_INCLUDEDIR}")
 	ADD_CUSTOM_TARGET(genf77blas
-	COMMAND ${AWK} 'BEGIN{print \"\#ifndef OPENBLAS_F77BLAS_H\" \; print \"\#define OPENBLAS_F77BLAS_H\" \; print \"\#include \\"openblas_config.h\\" \"} \; NF {print}\; END{print \"\#endif\"}' ${CMAKE_CURRENT_SOURCE_DIR}/common_interface.h > ${CMAKE_BINARY_DIR}/f77blas.h
+	COMMAND ${AWK} 'BEGIN{print \"\#ifndef OPENBLAS_F77BLAS_H\" \; print \"\#define OPENBLAS_F77BLAS_H\" \; print \"\#include \\"openblas_config.h\\" \"}; NF {print}; END{print \"\#endif\"}' ${CMAKE_CURRENT_SOURCE_DIR}/common_interface.h > ${CMAKE_BINARY_DIR}/f77blas.h
 
 	DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/config.h
 	)

gen_config_h.c

@@ -0,0 +1,36 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+int main(int argc, char**argv) {
+FILE *fp;
+char line[100];
+char line2[80];
+char *s;
+int i;
+
+fprintf(stdout,"#ifndef OPENBLAS_CONFIG_H\n");
+fprintf(stdout,"#define OPENBLAS_CONFIG_H\n");
+fp=fopen(argv[1],"r");
+do{
+s=fgets(line,80,fp);
+if (s== NULL) break;
+memset(line2,0,80);
+i=sscanf(line,"#define %70c",line2);
+if (i>0) {
+	fprintf(stdout,"#define OPENBLAS_%s",line2);
+} else {
+	fprintf(stdout,"\n");
+}
+} while (1);
+fclose(fp);
+fprintf(stdout,"#define OPENBLAS_VERSION \"OpenBLAS %s\"\n", VERSION);
+fp=fopen(argv[2],"r");
+do{
+s=fgets(line,100,fp);
+if (s== NULL) break;
+fprintf(stdout,"%s",line);
+} while(1);
+fclose(fp);
+fprintf(stdout,"#endif /* OPENBLAS_CONFIG_H */\n");
+exit(0);
+}